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Slenderness ratio of each bracing member about the z-z axis, Xbz

Second moment of area of each bracing member about the y -y axis, Iby

Radius of gyration of each bracing member about the y-y axis, iby

Slenderness ratio of each bracing member about the y-y axis, Xby

Timber properties

Table 1.3 (BS EN 338:2003, Table 1) For the main beam - C22:

Characteristic bending strength, /m,k

Fifth-percentile modulus of elasticity parallel to grain, Eo.os

Mean density of the beam timber, pm

For each bracing member - C16:

Characteristic bending strength, /bm,k

Characteristic compressive strength,

Fifth-percentile modulus of elasticity parallel to the grain, Ebo.os

Mean modulus of elasticity parallel to the grain, Ebo.mean

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